E-S Stealth Electric Bike Owners

[Hyena]

My Fighter is set to 1.0 mΩ, the Bomber is around 0.65 mΩ after a controller replacement though I haven't re-calibrated yet.

That's quite a difference. If mine is really around 1.0mohm instead of the 1.5 I have currently programmed that'd explain my artificially good economy. I knew it was too good to be true that the new 40mm xlyte motor was more efficient than my old 9C! (though I thought the increased copper mass might have been generating more usable power than the 9C which would be dumping a heap as heat around 3-4kw)
Anyone else with a newish fighter care to post up their rshunt value ?
I should just buy a replacement icharger but my current one was only 3 months old when it blew up so I'm waiting for it to be be replaced under warranty. I might have to come pay you a visit voicecoils - you got one at work ?

 

[Kepler]

I guess you are saying I work for HPC?...parnoia runs deep in these forums :| but I do have a question regarding the Stealth battery package: I read somewhere that the batteries are 36 pounds lythium iron I think....if I were to replace with lythium polymer or whatever the lighter batteries are called how much weight would I save?....the guys at HPC said the lighter batteries have 700 cycles versus 1000 for the stealths batteries do not know how true that is...on their site they say 10 pounds but they do not say how much kwh for 10 pounds...what I am getting at is this: if I buy stealth bomber and replace batteries with same kwh but just lighter batteries how much weight can I save?and are there any problems besides less cycles with the lighter batteries?

A low post count and some back handed product complements does tend to raise a few suspicions :lol: . Looks like a quick search answered your last question which is good. No point going over old ground. If you legitimately are interested in a Stealth bike the amount of information, videos and multitude of happy customers should give you a reasonable level of confidence. Perhaps every post doesn't need to be in bold lettering either. Just a friendly suggestion :wink:

 

[korpin]

HAVE ANY OF YOU GUYS SEEN THE Greyborg frame which looks just like a Stealth: http://www.greyb.org/assembler.html I was curious is the stealth frame made the same way meaning the skin supports the load?....it seems from looking at the photos of the greyborg there is no internal frame!

 

[Kepler]

From the Stealth Web site.

FRAME. Constructed from aircraft certified CrMo alloys, the one piece monocoque frames large polar moment of inertia displays exceptional torsional rigidity under the most extreme loading conditions.So yes they are.

The Greyborg bike was a Stealth inspired one off handcrafted machine with lots of Greyborg customization.

 

[remf]

Greyborgs are very nice...in fact it would probably be my third choice after the Fighter & Bomber.

 

[Hyena]

HAVE ANY OF YOU GUYS SEEN THE Greyborg frame which looks just like a Stealth!

YES WE HAVE. They are essentially the same with a monocoque frame, if you read back through the thread you'll see pictures inside the stealths. Hal acknowledged it was a copy of the bomber.

In other late breaking news, have you heard lithium batteries have now been invented ? Man Korpin, this is going to be great for powering our ebikes, no more SLA!

 

[full-throttle]

In other late breaking news, have you heard lithium batteries have now been invented ?

Woo hoo!

Hyena's guide to ebike battery technology (if they were women)

SLA

This is the fat girl at school. She ate all the pies and if you have to put her on the back of your bike you'll know all about the extra weight. She may break your frame if you're rough with her. That said she'll put out because she doesn't know when someone will show interest in her again. Expect some nasty sagging, and while she might be able to travel 20 miles at walking pace, don't expect her to go that far if you make her run. Expect her heart to give out after a year.

2-3C LiFePO4

This is common plain Jane from accounts. She'll cost you a bit more than SLA the Hutt but you won't break your back lugging her around and she won't drop dead after a year of you exercising her. She does have asthma though so while she'll whip along the flat OK don't expect her sprint off the line or blaze up steep hills.

6-10C LiFePO4

If wheezy Jane from accounts isn't performing well enough for you meet Helga. Part Barvarian, part Viking she can run just as fast as Jane but has bigger muscles to flex. Wanna get off the line quick or up that steep hill ? She'll throw you over her shoulder and carry you up. The trade off is she isn't exactly slight... mmmm, chunky

20-50C Lipo

Meet Kara Kent. She's hot with a fit athletic body but for her small size and weight her power is out of this world. She can easily lift 20x her weight, be super fast and in the RC world she can fly. Be warned, if you get on the wrong side of her she'll melt your skin off with her heat vision. She's a little higher maintenance than Helga, but isnt she worth it ?!

 

[deecanio]

heheheheh.

D

 

[korpin]

seems helga is the best date....from other posts I READ they only saved 2 kg on fighter so that would be 3kg on bomber...anything less than 10-15 pounds is not worth the money or less cycles I don't mind a woman with a little muscle they can be fun to tussle...

 

[korpin]

I am in SFV area of los angeles county...found a bike dealer willing to sign up as a stealth dealer if two bikes are pre-sold....in exchange,we will get a hefty discount probably around 2,000.00 less need another buyer please contact me IF YOU ARE READY TO BUY WITHIN 2 WEEKS

 

[Cowardlyduck]

I am in SFV area of los angeles county...found a bike dealer willing to sign up as a stealth dealer if two bikes are pre-sold....in exchange,we will get a hefty discount probably around 2,000.00 less need another buyer please contact me IF YOU ARE READY TO BUY WITHIN 2 WEEKS

Lol, good luck with the discount. I'll be interested to see if you actually pull that off.
You do realise there's a 2 month wait once you've paid for the bike whilst it's built?

Rode my Fighter home in the dark for the first time last night. I'm not sure what it was, but I was screamin. Managed my normal 45-50min commute in 34 min.

Cheers

 

[korpin]

YES I know theres a wait..thats why i wanna get this going the guy will at least want a deposit,,,,he said he would do it a dealer has to get two I think he is worried the other one will not sell

 

[Cowardlyduck]

Just wondering...
Making an assumption here, but I would take a guess that these (or something similar) are the cells being used in the battery in my Fighter.
http://www.bmsbattery.com/lifepo4-cell/10-headway-38120s-lifepo4-battery-cell.html

With that in mind, is it a problem that I've seen nearly 2000w on occasion when doing regen? I mean, that's about 40 amps, and these cells are only rated for 50. If I were to manage over 50 amps down a really steep hill, would it likely damage my battery, or does the BMS stop that?

Cheers

 

[Kepler]

Older Stealth bikes use to use headways but now they use cells like this http://www.endless-sphere.com/forums/viewtopic.php?f=14&t=29959. Not these specifically but a flat bagged type of cell. Their C rating is much higher then Headways so the high current generated by re gen isn't an issue.

 

[korpin]

I would assume the controller manages the regen because I saw on another google forum that a guy with a stealth bomber added another battery pack to his fork crowns and his regenerative value went up considerably.....not that I am an expert,but this tells me the controller senses there is more room to offload current faster or perhaps the controller senses less heat build up?...I would think with more batteries you could offload more current quicker with less heat to the motor?...maybe someone who is more technically able can explain?

 

[Cowardlyduck]

Older Stealth bikes use to use headways but now they use cells like this http://www.endless-sphere.com/forums/viewtopic.php?f=14&t=29959. Not these specifically but a flat bagged type of cell. Their C rating is much higher then Headways so the high current generated by re gen isn't an issue.

Ah...good to know. Thanks Kepler.

On another note, I am getting sick of babying this motor. I keep seeing 60-65C temps on the covers on my daily commute, and I only have my max amps set to 40 at the moment. :x

Does anyone else with a Fighter keep an eye on the temperature. What are others seeing in general street riding use?

Cheers

 

[korpin]

would it be possible to put "scoops" on the sides of motor casing facing forward and an outlet on the top between the spokes facing rearward (or perhaps the other way around since the cooling scoops could pick up more air farther out from center) to provide cooling?.....of course the motors would need cleaning with air often and going through water would be out....but its a thought....also is the bombers magnets iron?....I know rare earth magnets run cooler.....also coating the copper windings and battery cables with silver may help somewhat just some ideas

 

[Cowardlyduck]

would it be possible to put "scoops" on the sides of motor casing facing forward and an outlet on the top between the spokes facing rearward (or perhaps the other way around since the cooling scoops could pick up more air farther out from center) to provide cooling?.....of course the motors would need cleaning with air often and going through water would be out....but its a thought....also is the bombers magnets iron?....I know rare earth magnets run cooler.....also coating the copper windings and battery cables with silver may help somewhat just some ideas

Yeah, there are plenty of options out there for cooling. None that have no drawbacks though.
I already asked a few questions like that here.
http://endless-sphere.com/forums/viewtopic.php?f=30&t=37344
I'm not wanting to void my warranty modding my motor for cooling just yet.
I just had to bitch about it somewhere as it's driving me nuts. I either have an underpowered (but good looking) sloth that stays cool, or an adequately powered, fast bike for about 20-30 minutes at a time. It just frustrates me that a product, especially one that costs so much, and as renowned as this, has such an annoying problem.
Or is it just me/ my motor. Do others see/have this same frustration?

I'm thinking/leaning towards putting Oil in the motor once warranty is up. Just hope I can baby it enough to last till then. 8)

Cheers

 

[Kepler]

Older Stealth bikes use to use headways but now they use cells like this http://www.endless-sphere.com/forums/viewtopic.php?f=14&t=29959. Not these specifically but a flat bagged type of cell. Their C rating is much higher then Headways so the high current generated by re gen isn't an issue.

Ah...good to know. Thanks Kepler.

On another note, I am getting sick of babying this motor. I keep seeing 60-65C temps on the covers on my daily commute, and I only have my max amps set to 40 at the moment. :x

Does anyone else with a Fighter keep an eye on the temperature. What are others seeing in general street riding use?

Cheers

40A is only around 2000W. The motor should be able to sustain this power level I would have thought.

In relation to cooling mods, you could just bite the bullet and void the motor warranty. Its not a huge cost to replace and the mods will make it less likely that you would need to replace it anyway.

 

[sn0wchyld]

would it be possible to put "scoops" on the sides of motor casing facing forward and an outlet on the top between the spokes facing rearward (or perhaps the other way around since the cooling scoops could pick up more air farther out from center) to provide cooling?.....of course the motors would need cleaning with air often and going through water would be out....but its a thought....also is the bombers magnets iron?....I know rare earth magnets run cooler.....also coating the copper windings and battery cables with silver may help somewhat just some ideas

Yeah, there are plenty of options out there for cooling. None that have no drawbacks though.
I already asked a few questions like that here.
http://endless-sphere.com/forums/viewtopic.php?f=30&t=37344
I'm not wanting to void my warranty modding my motor for cooling just yet.
I just had to bitch about it somewhere as it's driving me nuts. I either have an underpowered (but good looking) sloth that stays cool, or an adequately powered, fast bike for about 20-30 minutes at a time. It just frustrates me that a product, especially one that costs so much, and as renowned as this, has such an annoying problem.
Or is it just me/ my motor. Do others see/have this same frustration?

I'm thinking/leaning towards putting Oil in the motor once warranty is up. Just hope I can baby it enough to last till then. 8)

Cheers

Do a check of the no-load amps, just to make sure there isn't something causing drag (like bad bearings etc). Also, do you floor it away from lights or stops etc? it helps if you roll on to the throttle rather than just slam it to 100%.

All in all I'd be modding the motor. I saw somewhere that you can get replacement sidecovers for the Hx motors for about $60, or you can do what I did, and buy a burnt motor off a fellow es member and use them! I've got a poor mans fighter (norko aline with a ht) and since adding cooling (drilled side covers and internal fans) the side covers never get over about 40deg no mater how hard I ride, and the internals are usually under 80, 83 is the hottest ive seen.

 

[remf]

Yeah those drilled covers from Grin look really good for cooling and when used in combination with Boeshield T9, excellent water drainage as well.
http://ebikes.ca

I regularly flog my 3548 at full power up big hills and it gets really hot but never too hot apparently.

 

[Kepler]

would it be possible to put "scoops" on the sides of motor casing facing forward and an outlet on the top between the spokes facing rearward (or perhaps the other way around since the cooling scoops could pick up more air farther out from center) to provide cooling?.....of course the motors would need cleaning with air often and going through water would be out....but its a thought....also is the bombers magnets iron?....I know rare earth magnets run cooler.....also coating the copper windings and battery cables with silver may help somewhat just some ideas

Yeah, there are plenty of options out there for cooling. None that have no drawbacks though.
I already asked a few questions like that here.
http://endless-sphere.com/forums/viewtopic.php?f=30&t=37344
I'm not wanting to void my warranty modding my motor for cooling just yet.
I just had to bitch about it somewhere as it's driving me nuts. I either have an underpowered (but good looking) sloth that stays cool, or an adequately powered, fast bike for about 20-30 minutes at a time. It just frustrates me that a product, especially one that costs so much, and as renowned as this, has such an annoying problem.
Or is it just me/ my motor. Do others see/have this same frustration?

I'm thinking/leaning towards putting Oil in the motor once warranty is up. Just hope I can baby it enough to last till then. 8)

Cheers

Do a check of the no-load amps, just to make sure there isn't something causing drag (like bad bearings etc). Also, do you floor it away from lights or stops etc? it helps if you roll on to the throttle rather than just slam it to 100%.

All in all I'd be modding the motor. I saw somewhere that you can get replacement sidecovers for the Hx motors for about $60, or you can do what I did, and buy a burnt motor off a fellow es member and use them! I've got a poor mans fighter (norko aline with a ht) and since adding cooling (drilled side covers and internal fans) the side covers never get over about 40deg no mater how hard I ride, and the internals are usually under 80, 83 is the hottest ive seen.

Good advice Sn0. I am with you 8)

 

[senilespeedteam]

hi all, new to the forum and after a uk dealer to supply a stealth Bomber , i believe there is one on here but cant find his details??? anybody got his website or contact details??
many thanks

 

[Justtoby]

hi all, new to the forum and after a uk dealer to supply a stealth Bomber , i believe there is one on here but cant find his details??? anybody got his website or contact details??
many thanks

Pm sent.

I am away this week but back next week. I will check Pm's when I can this week and will give you a contact number next week.

 

[Cowardlyduck]

Thanks for all the comments guys.

Yes I will get the bearings checked when I get the bike serviced and a rear derailleur added. At the moment there is resistance, but I can't tell where it's coming from as there are a few things out of whack back there. It's not majorly problematic though, I can still pedal down hills and on flats a bit.

Yes I do WOT from stop a lot, but that's just my riding style. I don't want to have to change that, but I guess I will if I have to.
Admittedly...I am a very aggressive rider. I ride very hard and fast, pretty much always. Maybe it's time I change this, especially since I've just had my first kid.

The drilled side covers aren't really an option for me as I ride through water and crap a lot and I don't really want to have to deal with cleaning and maintaining it. Hence why I think Oil is my best option as once it's in there and sealed up, that's it.

Yesterday arvo I tried setting the amps to 60, just to see if getting up the hills faster maybe meant it kept cooler. Didn't work though, motor reached 70C by the time I got home.

Cheers